Soil pipe cleanout extension



F. c. FULLER 2,911,001

SOIL PIPE CLEANOUT EXTENSION Nov. 3, 1959 Filed sept. 13, 1957 A TTOENE Y United States Patent OA" if 2,911,001 l SOIL PIPE CLEAN OUT EXTENSION Frank C. `Fuller, Flint, Mich. Application September 13, 1957, Serial No. 683,735 1 Claim. (Cl. 137-362) The present invention relates to cleanout extensions for soil pipe lines, land it consists in the combmation, construction, installation, and arrangement of parts herein described and claimed. l

When installing a cleanout extension to a soil pipe line in the basement of a building, it is extremely difcult to determine justV how be in order that it terminate at the level of a concrete floor in the basement to be subsequently laid. ,To use la section of ordinary cast iron soil pipe in the construction of the extension andto extend an end thereof above any possible.level theoor may be and to break olf at that portion of the soil pipe section above the iloor after the floor is laid would not solve the problem, as there would be no Vsupport on the unbroken portion of the soil pipe section for satisfactory attachment of a trap screw ferrule fitting used to close the extension and through which access is gained for cleaning the soil pipe line. If it were not for this uncertainty as to just where the floor level would be, it would be a simple Vmatter to position the bell end of an ordinary section of soil pipe at the proper floor level, thus providing a seat for the trap screw ferrule fixture with said bell end. Y

It is therefore an .object of the invention to Iprovide .a section of pipe having a transversely grooved inner surface throughout a substantial length thereof and constructed of a material so that a portion of the length of said section may be broken away after a floor is laid for terminating said section at the level of a floor and thereby provide ledgesv with said grooved surface adjacent vsaid iioor level on which is supported a closure for said pipe section.

Another object of the invention is to provide a cleanout extension of the above outlinedcharacter wherein the inner surface of apipe section of said extension is grooved in a spiral manner and wherein the closure member has protrusions thereon that engage into the spiral groove so as to permit adjustment of the elevation of the closure member by rotation thereof and to support the closure member in an adjusted position flush with a licor level.

A further object of the invention is to provide in a pipe section of the character set forth an outer surface on said pipe section of substantially the same coniiguration as said inner grooved surface and thereby provide a wall of substantially the same thickness throughout its grooved area so as to facilitate the breaking of the pipe entirely thereacross at approximately the level of the oor.

It is also an object of the invention to provide a soil pipe cleanout extension of the above-indicated character which can be conveniently and efficiently installed, which is simple and substantial in construction, which can be manufactured economically, and which will be thoroughly eiiicient and practical in use.

These, together with various auxiliary features and objects of the invention which will later become apparent as the following description proceeds, are attained by `the long the extension should 1 A i 2,911,001 Patented Nov. 3, 1959 lshowing the trap screw ferrule 'fixture in elevation and threaded into the pipe section and with the topy surface of said fixture ilush with the iloor level;

Figure 4 is a similar View showing the fixture in sectionand secured to the pipe section; and e Figure 5 is a view similar to Figure l of a r'nodied form Yof the invention and showing the connection to the soil pipe line in dash and dot lines.

i Refer now more specifically to the accompanying drawings wherein` like numerals designate similar parts throughout the various views, and particularly to Figure l wherein the numeral 10 indicates an underground soil pipe line having a Y branch pipe section 11 therein which is connected to a cleanout extension 12 leading upwardly in the ground and through a cement basement floor 13 laid on the ground. The cleanout extension 12, which is shown as a single pipe section connected direct to the Y branch 11 and which forms a part of the present invention, may be connected to the Y branch 11 either directly or by any number of ordinary soil pipe sections according to the approximate distance the soil pipe 10 is placed in the ground, so long as said extension has its upper end portion above said oor when laid, as indicated by the numeral 14.

The lower end portion of the pipe section 12 has an eighth bend 15 thereon for alignment with the branch 16 of the Y branch pipe section upon arrangement of the other or major straight portion 17 of said extension in an upstanding vertical position. The lower end of the bend 15 or the lower end of another pipe section connected thereto is received in the bell or hub 18 of the branch 16 and is secured in place in the usual manner with oakum packing 19 and lead 20, as shown in Figure 2.

Throughout the length of the straight portion 17 of the extension 12 and on its inner surface, there is provided a spiral groove 21, see Figures 2, 3, and 4, so as to form a plurality of slightly inclined spaced ledges 22 on the inside of said straight portion between the different convolutions of the spiral groove. The outer surface of the straight portion 17 is also spirally grooved, as at 23, and in a manner conforming substantially to the same configuration as that of the inner spiral groove and thereby provides a wall thickness of substantially the same thickness so as to facilitate the breaking o of the portion 14 above the floor at approximately the floor level, as at 24 and also as shown in Figures 2, 3, and 4.

While the ground in which the soil pipe line 10 is laid is still excavated and the cleanout extension is being connected thereto, there is no way of telling exactly Where the level of the cement iloor will be in order that the upper end of the extension will terminate at said level. It is for this reason that the entire straight portion 17 of the pipe section 12 is grooved, thus assuring the location of ledges 22 slightly below the door level wherever extension 12 by threading the protrusions 26 downwardly in the spiral groove 21 until the top surface 27 of said xture is iiush with the level of the floor 13, as shown in Figure 3. It can thus be seen that the protrusions 26 resting on the ledges 22 formed by the spiral groove 21 will support the fixture against falling downwardly and into the extension 12, while applying oakum packing 28 and lead 29 to rigidly secure said xture in place, as shown in Figure 4. A plug screw 30 threaded into the trap screw ferrule 25 closes the upper end of the cleanout extension l2 and is removed when it is desired to gain access to the interior of the soil pipe line 10.

The modified form of invention illustrated in Figure 5 shows a cleanout extension 12a that is straight throughout its length for connection to a soil pipe section 16a that is vertically positioned. This extension, with the exception of its lower end portion a being on the same center line as that of the spiral threaded portion 17 thereof, is identical to that previously described, therefore, further description thereof is not necessary.

In view of the foregoing description taken in conjunction with the accompanying drawings, it is believed that a clear understanding of the construction, installation, operation, and advantages of the soil pipe cleanout extension will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

Itis to be understood, however, that even though there are herein shown and described preferred embodiments of the invention, various changes may be made without departing from the spirit and full intendment of the invention.

What is claimed is:

A soil pipe cleanout extension comprising a pipe section having a spiral grooved inner surface and a spiral grooved outer surface of substantially the same configuration as said spiral grooved inner surface and thereby providing a substantially uniform wall thickness throughout a substantial length of said pipe section, said pipe section being constructed of a material that a portion of the length thereof having the spiral grooved inner and outer surfaces may be broken away so as to terminate said pipe section at the level of a iioor encircling and securely embracing the outer side of said pipe section and laid subsequent to installation of said pipe section and prior to the breaking away of the upper portion of said pipe section, a trap screw ferrule fixture wholly within the end of said pipe section terminating at the floor level, protrusions on the outer side of said trap screw ferrule, engaging the grooved inner surface of the unbroken pipe section and supporting the upper side of said ferrule flush with the oor level, means sealing said trap screw ferrule in adjusted position in said pipe section, and a removable plug screwed into said trap screw ferrule for closing said extension.

References Cited in the le of this patent UNITED STATES PATENTS 800,687 Snow Oct. 3, 1905 1,185,846 Simpson June 6, 1916 1,832,183 Cherne Nov. 17, 1931 2,801,023 Baker et al. July 30, 1957 

